Effect of alignment perturbations in a trans-tibial prosthesis user: a pilot study
— University of Strathclyde Skip to main navigation Skip to search Skip to main content University of Strathclyde Home Help & FAQ Home Profiles Research Units Research output Projects Datasets Equipment Student theses Impacts Prizes Activities Search by expertise, name or affiliation Effect of alignment perturbations in a trans-tibial prosthesis user: a pilot study Anna Courtney, Michael S. Orendurff, Adrianus Buis Biomedical Engineering Research output: Contribution to journal › Article › peer-review 5 Citations (Scopus) 140 Downloads (Pure) Overview Fingerprint Profiles (1) Research output (1) Abstract A recurring complication voiced by trans-tibial prosthetic limb users is ‘poor socket fit’ with painful residuum-socket interfaces, a consequence of excess pressure. This is attributable to both poor socket fit and poor socket alignment, however, their interaction has not been quantified. Through evaluation of kinetic data this study aimed to articulate an interaction uniting socket design, alignment and interface pressures (IPs). Results will help refine future studies, which will help determine if sockets can be designed, fitted and aligned to maximise mobility whilst minimising injurious forces. IPs were recorded throughout ambulation in one user with ‘optimal (reference) alignment’ followed by five malalignments in a patellar tendon-bearing (PTB) and a hydrocast socket. Marked differences in pressure distribution were discovered when equating the PTB against the hydrocast socket and when comparing IPs from reference to offset alignment. PTB sockets were established more sensitive to alignment perturbations than hydrocast sockets. A complex interaction was found, with the most prominent finding demonstrating the requisite for attainment of optimal alignment: a translational alignment error of 10mm can increase maximum peak pressures by 227 percent (x̄=17.5%). Refinements for future trials have been established, as has the necessity for future research regarding socket design, alignment and IPs. Original language English Pages (from-to) 396-401 Number of pages 6 Journal Journal of Rehabilitation Medicine Volume 48 Issue number 4 Early online date 1 Mar 2016 DOIs https://doi.org/10.2340/16501977-2075 Publication status Published - 22 Mar 2016 Keywords alignment distribution measurement perturbations pressure prosthesis transtibial Access to Document 10.2340/16501977-2075 Courtney-etal-JRM-2015-The-effect-of-alignment-perturbations-in-a-trans-tibial-prosthesis-userAccepted author manuscript, 612 KB Other files and links http://www.ingentaconnect.com/content/mjl/sreh Profiles Arjan Buis arjan.buis strath.ac uk Biomedical Engineering - Reader Health and Wellbeing Person: Academic Research output Research output per year 2016 2016 2016 5 Citations 1 Article Research output per year Research output per year The effect of alignment changes on unilateral transtibial amputee's gait: a systematic reviewJonkergouw, N., Prins, M. R., Buis, A. W. P. & van der Wurff, P., 6 Dec 2016, In: PLOS One. 11, 12, 18 p., e0167466. Research output: Contribution to journal › Article › peer-review Open Access File 13 Citations (Scopus) 114 Downloads (Pure) Cite this APA Author BIBTEX Harvard Standard RIS Vancouver Courtney, A., Orendurff, M. S., & Buis, A. (2016). Effect of alignment perturbations in a trans-tibial prosthesis user: a pilot study. Journal of Rehabilitation Medicine, 48(4), 396-401 . https://doi.org/10.2340/16501977-2075 Courtney, Anna ; Orendurff, Michael S. ; Buis, Adrianus. / Effect of alignment perturbations in a trans-tibial prosthesis user : a pilot study. In: Journal of Rehabilitation Medicine. 2016 ; Vol. 48, No. 4. pp. 396-401 . @article{2f2c20dba691430f8f7f8ab61ddeaa09, title = "Effect of alignment perturbations in a trans-tibial prosthesis user: a pilot study", abstract = "A recurring complication voiced by trans-tibial prosthetic limb users is {\textquoteleft}poor socket fit{\textquoteright} with painful residuum-socket interfaces, a consequence of excess pressure. This is attributable to both poor socket fit and poor socket alignment, however, their interaction has not been quantified. Through evaluation of kinetic data this study aimed to articulate an interaction uniting socket design, alignment and interface pressures (IPs). Results will help refine future studies, which will help determine if sockets can be designed, fitted and aligned to maximise mobility whilst minimising injurious forces. IPs were recorded throughout ambulation in one user with {\textquoteleft}optimal (reference) alignment{\textquoteright} followed by five malalignments in a patellar tendon-bearing (PTB) and a hydrocast socket. Marked differences in pressure distribution were discovered when equating the PTB against the hydrocast socket and when comparing IPs from reference to offset alignment. PTB sockets were established more sensitive to alignment perturbations than hydrocast sockets. A complex interaction was found, with the most prominent finding demonstrating the requisite for attainment of optimal alignment: a translational alignment error of 10mm can increase maximum peak pressures by 227 percent ({\=x}=17.5%). Refinements for future trials have been established, as has the necessity for future research regarding socket design, alignment and IPs.", keywords = "alignment, distribution, measurement, perturbations, pressure, prosthesis, transtibial", author = "Anna Courtney and Orendurff, {Michael S.} and Adrianus Buis", year = "2016", month = mar, day = "22", doi = "10.2340/16501977-2075", language = "English", volume = "48", pages = "396--401 ", journal = "Journal of Rehabilitation Medicine", issn = "1650-1977", number = "4", } Courtney, A, Orendurff, MS & Buis, A 2016, 'Effect of alignment perturbations in a trans-tibial prosthesis user: a pilot study', Journal of Rehabilitation Medicine, vol. 48, no. 4, pp. 396-401 . https://doi.org/10.2340/16501977-2075 Effect of alignment perturbations in a trans-tibial prosthesis user : a pilot study. / Courtney, Anna; Orendurff, Michael S.; Buis, Adrianus. In: Journal of Rehabilitation Medicine, Vol. 48, No. 4, 22.03.2016, p. 396-401 . Research output: Contribution to journal › Article › peer-review TY - JOUR T1 - Effect of alignment perturbations in a trans-tibial prosthesis user T2 - a pilot study AU - Courtney, Anna AU - Orendurff, Michael S. AU - Buis, Adrianus PY - 2016/3/22 Y1 - 2016/3/22 N2 - A recurring complication voiced by trans-tibial prosthetic limb users is ‘poor socket fit’ with painful residuum-socket interfaces, a consequence of excess pressure. This is attributable to both poor socket fit and poor socket alignment, however, their interaction has not been quantified. Through evaluation of kinetic data this study aimed to articulate an interaction uniting socket design, alignment and interface pressures (IPs). Results will help refine future studies, which will help determine if sockets can be designed, fitted and aligned to maximise mobility whilst minimising injurious forces. IPs were recorded throughout ambulation in one user with ‘optimal (reference) alignment’ followed by five malalignments in a patellar tendon-bearing (PTB) and a hydrocast socket. Marked differences in pressure distribution were discovered when equating the PTB against the hydrocast socket and when comparing IPs from reference to offset alignment. PTB sockets were established more sensitive to alignment perturbations than hydrocast sockets. A complex interaction was found, with the most prominent finding demonstrating the requisite for attainment of optimal alignment: a translational alignment error of 10mm can increase maximum peak pressures by 227 percent (x̄=17.5%). Refinements for future trials have been established, as has the necessity for future research regarding socket design, alignment and IPs. AB - A recurring complication voiced by trans-tibial prosthetic limb users is ‘poor socket fit’ with painful residuum-socket interfaces, a consequence of excess pressure. This is attributable to both poor socket fit and poor socket alignment, however, their interaction has not been quantified. Through evaluation of kinetic data this study aimed to articulate an interaction uniting socket design, alignment and interface pressures (IPs). Results will help refine future studies, which will help determine if sockets can be designed, fitted and aligned to maximise mobility whilst minimising injurious forces. IPs were recorded throughout ambulation in one user with ‘optimal (reference) alignment’ followed by five malalignments in a patellar tendon-bearing (PTB) and a hydrocast socket. Marked differences in pressure distribution were discovered when equating the PTB against the hydrocast socket and when comparing IPs from reference to offset alignment. PTB sockets were established more sensitive to alignment perturbations than hydrocast sockets. A complex interaction was found, with the most prominent finding demonstrating the requisite for attainment of optimal alignment: a translational alignment error of 10mm can increase maximum peak pressures by 227 percent (x̄=17.5%). Refinements for future trials have been established, as has the necessity for future research regarding socket design, alignment and IPs. KW - alignment KW - distribution KW - measurement KW - perturbations KW - pressure KW - prosthesis KW - transtibial UR - http://www.ingentaconnect.com/content/mjl/sreh U2 - 10.2340/16501977-2075 DO - 10.2340/16501977-2075 M3 - Article VL - 48 SP - 396 EP - 401 JO - Journal of Rehabilitation Medicine JF - Journal of Rehabilitation Medicine SN - 1650-1977 IS - 4 ER - Courtney A, Orendurff MS, Buis A. Effect of alignment perturbations in a trans-tibial prosthesis user: a pilot study. Journal of Rehabilitation Medicine. 2016 Mar 22;48(4):396-401 . https://doi.org/10.2340/16501977-2075 Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2022 Elsevier B.V. We use cookies to help provide and enhance our service and tailor content. By continuing you agree to the use of cookies Log in to Pure About web accessibility Contact us
